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Started programming on a ZX spectrum in the 80's and have moved through Assembly, Turbo Pascal, C++, C#, Fortran. My main area of focus is engineering and scientific computing like numerical methods and 3D graphics.


Nov
21
comment How much pressure do wheels exert on the ground?
Or download en.vinksda.nl/toolkit-mechanical-calculations/… and enter your data.
Nov
20
comment How torque and friction cause wheel to roll
The answer is in the question. Motion is caused by the net forces and you only have one force acting in the horizontal direction.
Nov
20
comment Damping Constant for a Ball Rolling in a Bowl
The link is course notes from Carnegie Melon. I do not know who the author is, or what the course# this relates to.
Nov
19
answered Damping Constant for a Ball Rolling in a Bowl
Nov
19
comment Car driving / falling off of a cliff - will it land upright?
If you notice the vehicle rotates and to end. There is nothing stopping it from rotating, so overall it might land any which way. Sort of like a coin toss.
Nov
16
comment Will a stone thrown in space move forever?
Well there are super voids out there en.wikipedia.org/wiki/Void_(astronomy)
Nov
15
comment Physical meaning of the angular momentum
Angular momentum is the propensity of a rotating mass to keep rotating.
Nov
15
comment Who plays the role of centrifugal force in an inertial frame of reference?
That is right, centripetal force acts to force the circular motion. centrifugal force is just the reaction force to this.
Nov
15
answered Angular Velocity
Nov
15
comment How efficient is a piston?
It is not only efficiency that is important, but also reliability, robustness and power density. Difficult to get those with other mechanisms. Granted most of engine friction comes from the piston skirt interface so there is room for improvement.
Nov
14
revised How to find “Time” from “Force vs. Velocity” graph?
added 320 characters in body
Nov
14
answered How to find “Time” from “Force vs. Velocity” graph?
Nov
14
comment How to find “Time” from “Force vs. Velocity” graph?
Actually we need the function of acceleration with distance or speed. We need to know how the force affects the motion to solve it.
Nov
13
answered Is more lift always better?
Nov
13
answered force acting perpendicular through a rotational axis
Nov
13
comment force acting perpendicular through a rotational axis
Actually the answer depends if the object is symmetric or not. But the OP needs to define what the mean by "effect on rotation". Is it magnitude only, or magnitude and direction?
Nov
13
awarded  Yearling
Nov
12
comment Motion of a rigrid body: Why is motion only a compostition of two forms: rotation and Translation?
In 3D the general motion is that of a screw. Translation and Rotation about the same axis at the same time. In 2D the same happens, but the screw axis is always perpendicular to the plane and the motion is pure rotation (screw pitch=0). So now to 4D and beyond..
Nov
11
answered Friction force in rolling motion
Nov
11
comment Friction force in rolling motion
Related: physics.stackexchange.com/q/146039/392